From my private collection:

The Accuphase AC-1 Low output Moving Coil Phono Cartridge, Upgrade with FG-S Line Contact Diamond Stylus and Boron Rod Cantilever.


This cartridge has been upgraded by my Japanese friend, he is a retired Koetzu engineer with FG-S Line Contact Stylus on Boron Cantilever and Suspension Tune Up, just did an audition and the sound is great, better than its original so much, and has only been audition for less then 3 hours.

This Accuphase AC-1 Low output moving coil cartridge retipped with upgrade square shank, low mass, high polish, grain oriented, gem grade, 4/75µm FG-S line contact diamond, set onto Boron rod cantilever. Cosmetically, this cartridge is 100% like new and better because of the massive upgrade cantilever and diamond.

Various design elements come together to make a cartridge sound clean, agile, fast, airy and so on and the AC-1 is imbued with these desirable sonic attributes. A stiff, low-mass cantilever plays a big part, as does that lovely, line contact gem.


Specifications
Cartridge Type: Moving coil (MC)
Output Voltage: 0.2 mV (at 1 kHz, 5 cm/sec)
Frequency Response: 20 Hz to 60,000 Hz
Internal Impedance: 4 ohms
Recommended Load Impedance: Greater than 50 ohms
Channel Separation: 30 dB
Channel Balance: Within 0.5 dB
Stylus Type: FG-S Line-contact diamond
Cantilever: Boron Rod
Vertical Tracking Angle: 20 degrees
Tracking Force Range: 1.5 to 2.5 g
Recommended Tracking Force: 2.0 g
Cartridge Weight: 9.5 g


This cartridge comes with wood box Specifications, tool and screws.

I've sold a lot of cartridges and have a lot of good feedback, please check it out.

And please take a look my other items.


Thanks,
Wayne
Wayne's audio